sweeping campaigns in the city. she started with kids. they had an exhibition at city hall. city officials heard about her efforts and they invited her to this facility. we thought it would coincide with our efforts to get folks to recycle, it is a great educational tool. since then, we have had 95 professional artists come through. >> how has the program changed over the years? how has the program -- what can the public has an artist engage with? >> for the most part, we worked with metal and wood, what you would expect from a program like ours. over the years, we tried to include artists and all types of mediums. conceptual artists, at installation, photographers, videographers. >> that has really expanded the program out.